Bushing volume & weight calculation

Use outer diameter and thickness to calculate the volume of the bushing

\[ Volume\, of\, bushing \\[12pt] = (area\, of\, large\, circle - area\, of\, small\, circle) \, length \\[12pt] = {Pi \over 4} \, (Outer\, diameter^2 - Inner\, diameter^2) \, Length \\[12pt] = {Pi \over 4} \, [Outer\, diameter^2 - (Outer\, diameter - 2 \cdot thickness)^2] \, length \\[12pt] = pi \, (outer\, diameter \cdot thickness - thickness^2) \, length \\[12pt] = \pi \, t \, (D - t) \, L \]

Use inner diameter and thickness to calculate the volume of the bushing

\[ Volume\, of\, bushing\\[12pt] = (area\, of\, large\, circle - area\, of\, small\, circle) \, length \\[12pt] = {Pi \over 4} \, (Outer\, diameter^2 - Inner\, diameter^2) \, Length \\[12pt] = {Pi \over 4} \, [(Inner\, diameter + 2 \cdot Thickness)^2 - inner\, diameter^2] \, length \\[12pt] = pi \, (inner\, diameter \cdot thickness + thickness^2) \, length \\[12pt] = \pi \, t \, (d + t) \, L \]

Use outer diameter and inner diameter to calculate the volume of the bushing

\[ Volume\, of\, bushing \\[12pt] = (area\, of\, large\, circle - area\, of\, small\, circle) \, length \\[12pt] = {Pi \over 4} \, (Outer\, diameter^2 - Inner\, diameter^2) \, Length \\[12pt] = {\pi \over 4} \, (D^2 - d^2) \, L \]